A kind of eva adhesive film and preparation method thereof

An adhesive film and ethylene technology, applied in the field of EVA adhesive film and its preparation, can solve the problems of contamination of cells, welding strips or busbars, appearance folds of photovoltaic modules, etc., so as to solve production technical problems, reduce accumulation, and simple equipment process. Effect

Active Publication Date: 2018-03-02
GUANGZHOU LUSHAN NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The second aspect of the present invention is to provide a preparation method of EVA adhesive film, which avoids the flow during the process of encapsulating the assembly through the pre-crosslinking of the EVA adhesive film, thereby solving the problem that white fillers in photovoltaic modules easily contaminate cells, Technical problems of appearance defects such as welding strips or bus strips, appearance wrinkles of photovoltaic modules, etc.

Method used

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  • A kind of eva adhesive film and preparation method thereof
  • A kind of eva adhesive film and preparation method thereof
  • A kind of eva adhesive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of EVA adhesive film is prepared by the following method:

[0033] 1) Add 0.8 parts of tert-butyl peroxide-isopropyl carbonate, 0.8 parts of bis(3,5-tri Butyl-4-hydroxyphenyl) sulfide, 0.8 parts of bis-2,2,6,6-tetramethylpiperidinol sebacate, 0.6 parts of vinyltriethoxysilane, 7 parts barium sulfate and 10 parts of zinc stearate, fully mixed, to obtain a mixture;

[0034] 2) Extrusion into film: put the mixture obtained in step 1) into the extruder, plasticize and extrude through the extruder, then pass through a mold to shape, and finally cool to form a film to obtain a semi-finished film; the extrusion of the extruder The temperature is 100°C, and the temperature of the mold is 120°C;

[0035] 3) Pre-crosslinking: pull out the semi-finished film obtained in step 2), pre-crosslink the semi-finished film by hot pressing, and finally cool and roll it to obtain a thickness of 0.7 mm and a surface roughness Ra of 0.5 μm EVA film.

[0036]The method of using hot ...

Embodiment 2

[0038] A kind of EVA adhesive film is prepared by the following method:

[0039] 1) Add 0.8 parts of tert-butyl peroxide-isopropyl carbonate, 0.8 parts of bis(3,5-tri Butyl-4-hydroxyphenyl) sulfide, 0.8 parts of bis-2,2,6,6-tetramethylpiperidinol sebacate, 0.6 parts of vinyltriethoxysilane, 1.0 parts of 4, 4-bis(5-methyl-2-benzoxazolyl) stilbene, 7 parts of barium sulfate and 10 parts of zinc stearate were fully mixed to obtain a mixture;

[0040] 2) Extrusion into film: put the mixture obtained in step 1) into the extruder, plasticize and extrude through the extruder, then pass through a mold to shape, and finally cool to form a film to obtain a semi-finished film; the extrusion of the extruder The temperature is 110°C, and the temperature of the mold is 110°C;

[0041] 3) Pre-crosslinking: pull out the semi-finished film obtained in step 2), pre-crosslink the semi-finished film by hot pressing, and finally cool and roll it to obtain a thickness of 0.4mm and a surface rough...

Embodiment 3

[0044] A kind of EVA adhesive film is prepared by the following method:

[0045] 1) Add 0.8 parts of tert-butyl peroxy-isopropyl carbonate, 0.8 parts of bis(3,5-tri Butyl-4-hydroxyphenyl) sulfide, 0.8 parts of bis-2,2,6,6-tetramethylpiperidinol sebacate, 0.6 parts of vinyltriethoxysilane, 7 parts of Titanium dioxide and 15 parts of butyl stearate are fully mixed to obtain a compound;

[0046] 2) Extrusion into film: put the mixture obtained in step 1) into the extruder, plasticize and extrude through the extruder, then pass through a mold to shape, and finally cool to form a film to obtain a semi-finished film; the extrusion of the extruder The temperature is 90°C, and the temperature of the mold is 110°C;

[0047] 3) Pre-crosslinking: pull out the semi-finished film obtained in step 2), pre-crosslink the semi-finished film by hot pressing, and finally cool and roll it to obtain a thickness of 0.4mm and a surface roughness Ra of 0.9 μm EVA film.

[0048] The method of usin...

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Abstract

The invention discloses an EVA adhesive film and a preparation method thereof, which is prepared from the following raw materials in parts by weight: 60-96.7 parts of ethylene-vinyl acetate copolymer, 0-20 parts of polyolefin elastomer, and 0.1-1.0 parts of antioxidant, 0.1-1.5 parts of antioxidant, 0.05-1.0 parts of light stabilizer, 0.05-1.5 parts of tackifier, 0-3 parts of fluorescent whitening agent, 1.0-10 parts of reflective filler, with dispersing effect Lubricant 2.0‑20 parts. The invention improves the dispersibility of the reflective filler and the uniformity of light reflectance by adding a lubricant with dispersing effect, and also solves the production technical problem that the high light reflectance EVA adhesive film is difficult to sustain production. At the same time, it has good bonding effect, high reflectivity and excellent moisture and heat aging resistance. Encapsulating photovoltaic modules can effectively solve appearance defects such as wrinkles, polluted cells and busbars.

Description

technical field [0001] The invention relates to an EVA adhesive film and a preparation method thereof, which is applied to the preparation of solar cell component encapsulation adhesive film and packaging of solar photovoltaic components, including single-glass silicon cell components, double-glass silicon cell components and thin-film cell components. Background technique [0002] With the rapid development of the photovoltaic industry and fierce competition among photovoltaic module manufacturers, the profit margin of single-glass silicon modules is getting smaller and smaller. Improving the power of single-glass silicon modules and the industrialization of double-glass modules have become urgent expectations of photovoltaic module manufacturers. At this stage, the best way to improve the power of single-glass silicon modules and the industrialization of double-glass modules is to use high-luminance EVA film to encapsulate solar photovoltaic modules. [0003] However, ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/00C09J151/00C09J123/08C08F255/02C08F230/08
Inventor 陈育淳余鹏唐舫成汪加胜
Owner GUANGZHOU LUSHAN NEW MATERIALS
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